Answer: Option (1) is the correct answer.
Explanation:
When dissolved in water, ammonium phosphate 
completely dissociates into ions and it gets attached to the opposite ends of water.
Therefore, it is soluble in water.
Whereas silver sulfate 
slightly dissolves into water as it gives very less 
ions. Therefore, silver sulfate has low solubility.
On the other hand, both 
and 
are insoluble in water.
Thus, we can conclude that out of the given options, is most soluble in water.
Answer: The frequency of the wave is 0.5 hertz.
Explanation:
= Frequency of the wave
= speed of the light in m/s
= Wavelength of the wave.
Here in question we are given with speed of the infrared light. So, we will replace the value of speed of light(c) from the given value of the speed of the infrared light.
Speed of infrared light = 6 m/s
The frequency of the wave is 0.5 hertz.
Answer:
D: Lithium
Explanation:
Lithium (Li) is less reactive than potassium (K) because the valence electrons in lithium atoms are closer tot he nuclei and harder to remove.
1. So 27.3 g Fe is 0.4911 mol (27.3 / 55.58). 45.8 g O is 2.862 mol. Because of the stoichiometry, 3/4 as much oxygen as iron gets consumed. For the 0.4911 mol Fe consumed, 0.3683 mol O is consumed. 2.862-0.3863 = 2.4757 mol, or 39.6 g O is left.
2. Hydrogen is the limiting reactant for these quantities. 2/3 as much ammonia is produced as hydrogen is consumed, so for 5.0 mol H2, that's 3.33 mol NH3.
Make sense?
